x2 Put him in as small a tub as you can, and try switching him to aspen bedding. It stays "fluffy" and allows them to feel more hidden than newspaper. Then leave him alone until he settles down.
I don't really see what RDR would/could/should do about it, especially months later, unless it's just to compare husbandry. These are snakes, not puppies that we "tame" to our liking.